function mileageOpenClose(elm_id, link_item, always_open) {
	var elm = document.getElementById('mileage_' + elm_id);
	if (elm.style.display == 'none' || always_open == true) {
		elm.style.display = 'block';
		if (link_item != null) {
			link_item.innerHTML = 'HIDE';
			link_item.className = 'hideshow minus';
		}
	} else {
		elm.style.display = 'none';
		if (link_item != null) {
			link_item.innerHTML = 'SHOW';
			link_item.className = 'hideshow plus';
		}
	}
}
